ARS | Publication request: Spread of insect-vectored plant pathogens: use of simulation models to assess the role of ecological and operational factors

Submitted to: Entomological Society of America Regional Meetings
Publication Type: Abstract Only
Publication Acceptance Date: February 6, 2009
Publication Date: March 29, 2009
Citation: Sisterson, M.S. 2009. Spread of insect-vectored plant pathogens: use of simulation models to assess the role of ecological and operational factors. Pacific Branch Meeting of the Entomological Society of America. March 29-April 1, 2009, San Diego, CA. Available: http://groups.ucanr.org/_2009_PBESA/files/64137.pdf

Technical Abstract: The spread of insect-vectored pathogens is dependent on many factors. As a consequence, it is often difficult to predict effects of manipulating one or more factors on pathogen spread. One method to aid in understanding the role of ecological and operational factors on pathogen spread is the use of simulation models. Here the development and use of two stochasitic, spatially-explicit models are reviewed. In the first, effects of insect-vector preference for healthy or infected plants were assessed. This model suggests that effects of such preference are dependent on assumptions concerning mechanisms of preference and indicate that different outcomes are expected depending on whether healthy or infected plants are preferred. In the second, effects of insecticide applications to reduce vector density and rouging (i.e., removing infected plants) on reducing disease incidence were assessed. Simulation of this model under different assumptions concerning ecology of the vector indicates that management strategies should be tailored to the specific vector targeted for control.